thermostats

Discussion in 'HVAC' started by mkkandb, Nov 20, 2005.

  1. Nov 20, 2005 #1

    mkkandb

    mkkandb

    mkkandb

    New Member

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    hi i just replaced the two thermostats on my hot water system.not looking at where the wires were on the old one .one red one white wire.now the real problem when the upstairs zone is calling for heat it comes on and the lower
    zone is off.bout when the lower zone comes on calling for heat both zone valves
    are open and both get heat even though the thermostat on the upstairs
    shows heat off.i have two honeywell model rth5100b thermostats and two
    taco model #571 zone valves running off one taco model 008-f2 circulator.
     
  2. Nov 30, 2005 #2

    icyhotnyc

    icyhotnyc

    icyhotnyc

    NYC HVAC expert

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    the wires should go on the r and w terminals on the tstat. unless you moved wires at the zone valves, you shouldnt have any problems
     

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